An apparatus for preparing a mixture of vapors and mist, suitable at least for a hyperthermal inhalational treatment of an upper portion of respiratory tract, said apparatus comprising: (a) an exterior housing encompassing said apparatus; (b) at least one substantially vertical wall disposed within said housing, wherein the distance from a bottom portion of said wall to the bottom of said housing is greater than zero; (c) at least one interior compartment within said housing, defined by said at least one substantially vertical wall; (d) an inhalant contained within said housing, wherein said bottom portion of said wall is disposed lower than the upper level of said inhalant; (e) an airflow inlet, disposed exteriorly to said interior compartment; (f) an inhalant inlet, for supplying said inhalant into said housing; (g) an outlet, disposed within said interior compartment, and (h) at least one electrical heating element, configured to heat said inhalant; (i) at least one blower, configured to generate an airflow of a low pressure at said airflow inlet; (j) a flexible hose, to conduct a mixture produced in said interior compartment; (k) a handpiece, at a terminal of said hose; (l) at least one nozzle, at the anterior of said handpiece; said apparatus is characterized by that: (m) said electrical heating element is disposed adjacently to said bottom portion of said wall to make said heating element be invested by circulation of said airflow underneath said bottom portion of said wall and concomitantly through said inhalant (l); (n) said airflow generated by said blower is configured to flow from said airflow inlet of said housing, in-between said housing and exterior of said interior compartment, underneath said bottom portion of said wall into said interior compartment and concomitantly through said inhalant, adjacently to said electrical heating element, wherein: (i) said airflow is configured to form circulation of said inhalant and concomitantly circulation of said airflow adjacently to said electrical heating element; whereby said system is configured to sustain enhanced convective cooling of said electrical heating element and surplus production of vapors of said inhalant, by said circulations of said inhalant and said airflow adjacently to said electrical heating element; (ii) said airflow is configured to mechanically stir said inhalant and enrich itself with mist and aerosols of said inhalant. (a) an exterior housing encompassing said apparatus; (b) at least one substantially vertical wall disposed within said housing, wherein the distance from a bottom portion of said wall to the bottom of said housing is greater than zero; (c) at least one interior compartment within said housing, defined by said at least one substantially vertical wall; (d) an inhalant contained within said housing, wherein said bottom portion of said wall is disposed lower than the upper level of said inhalant; (e) an airflow inlet, disposed exteriorly to said interior compartment; (f) an inhalant inlet, for supplying said inhalant into said housing; (g) an outlet, disposed within said interior compartment, and (h) at least one electrical heating element, configured to heat said inhalant; (i) at least one blower, configured to generate an airflow of a low pressure at said airflow inlet; (j) a flexible hose, to conduct a mixture produced in said interior compartment; (k) a handpiece, at a terminal of said hose; (l) at least one nozzle, at the anterior of said handpiece; said apparatus is characterized by that: (m) said electrical heating element is disposed adjacently to said bottom portion of said wall to make said heating element be invested by circulation of said airflow underneath said bottom portion of said wall and concomitantly through said inhalant (l); (n) said airflow generated by said blower is configured to flow from said airflow inlet of said housing, in-between said housing and exterior of said interior compartment, underneath said bottom portion of said wall into said interior compartment and concomitantly through said inhalant, adjacently to said electrical heating element, wherein: (i) said airflow is configured to form circulation of said inhalant and concomitantly circulation of said airflow adjacently to said electrical heating element; whereby said system is configured to sustain enhanced convective cooling of said electrical heating element and surplus production of vapors of said inhalant, by said circulations of said inhalant and said airflow adjacently to said electrical heating element; (ii) said airflow is configured to mechanically stir said inhalant and enrich itself with mist and aerosols of said inhalant. (i) said airflow is configured to form circulation of said inhalant and concomitantly circulation of said airflow adjacently to said electrical heating element; whereby said system is configured to sustain enhanced convective cooling of said electrical heating element and surplus production of vapors of said inhalant, by said circulations of said inhalant and said airflow adjacently to said electrical heating element; (ii) said airflow is configured to mechanically stir said inhalant and enrich itself with mist and aerosols of said inhalant.