An aerosol delivery system comprising: a vessel comprising a first end, a body and a second end: the first end comprising a resealable fitting for connecting with a gas supply and connected to an air channel formed in the body at the inlet side, the body having a liquid reservoir and a gas passage independent of the liquid reservoir, wherein the liquid reservoir and the gas passage are in communication with the gas supply via the resealable fitting and the air channel, wherein the air channel splits into a bypass channel and a liquid reservoir channel configured to direct a first portion of the gas received at the resealable fitting into the gas passage and a second portion of gas to the liquid reservoir, wherein the liquid reservoir channel provides the top of the liquid reservoir with pressure from the wall outlet to thereby force the liquid through to the bottom of the liquid reservoir, and wherein the body is configured to be adjacent to the resealable fitting when the resealable fitting is attached to the gas supply, the second end and the air channel being connected with a length of multi-lumen tubing, the second end defining a liquid path from the liquid reservoir and to a liquid lumen in the multi-lumen tubing and a gas path from the gas passage to at least one gas lumen in the multi-lumen tubing; a tube adapter having an inlet port connected to an end of the multi-lumen tubing, a tube opening sized to connect with a tube, wherein outlets for the gas and liquid lumens at the end of the multi-lumen tubing are arranged such that a gas issuing from the at least one gas lumen and liquid issuing from the liquid lumen continuously form an aerosol inside the tube adapter. a vessel comprising a first end, a body and a second end: the first end comprising a resealable fitting for connecting with a gas supply and connected to an air channel formed in the body at the inlet side, the body having a liquid reservoir and a gas passage independent of the liquid reservoir, wherein the liquid reservoir and the gas passage are in communication with the gas supply via the resealable fitting and the air channel, wherein the air channel splits into a bypass channel and a liquid reservoir channel configured to direct a first portion of the gas received at the resealable fitting into the gas passage and a second portion of gas to the liquid reservoir, wherein the liquid reservoir channel provides the top of the liquid reservoir with pressure from the wall outlet to thereby force the liquid through to the bottom of the liquid reservoir, and wherein the body is configured to be adjacent to the resealable fitting when the resealable fitting is attached to the gas supply, the second end and the air channel being connected with a length of multi-lumen tubing, the second end defining a liquid path from the liquid reservoir and to a liquid lumen in the multi-lumen tubing and a gas path from the gas passage to at least one gas lumen in the multi-lumen tubing; a tube adapter having an inlet port connected to an end of the multi-lumen tubing, a tube opening sized to connect with a tube, wherein outlets for the gas and liquid lumens at the end of the multi-lumen tubing are arranged such that a gas issuing from the at least one gas lumen and liquid issuing from the liquid lumen continuously form an aerosol inside the tube adapter. the first end comprising a resealable fitting for connecting with a gas supply and connected to an air channel formed in the body at the inlet side, the body having a liquid reservoir and a gas passage independent of the liquid reservoir, wherein the liquid reservoir and the gas passage are in communication with the gas supply via the resealable fitting and the air channel, wherein the air channel splits into a bypass channel and a liquid reservoir channel configured to direct a first portion of the gas received at the resealable fitting into the gas passage and a second portion of gas to the liquid reservoir, wherein the liquid reservoir channel provides the top of the liquid reservoir with pressure from the wall outlet to thereby force the liquid through to the bottom of the liquid reservoir, and wherein the body is configured to be adjacent to the resealable fitting when the resealable fitting is attached to the gas supply, the second end and the air channel being connected with a length of multi-lumen tubing, the second end defining a liquid path from the liquid reservoir and to a liquid lumen in the multi-lumen tubing and a gas path from the gas passage to at least one gas lumen in the multi-lumen tubing; a tube adapter having an inlet port connected to an end of the multi-lumen tubing, a tube opening sized to connect with a tube, wherein outlets for the gas and liquid lumens at the end of the multi-lumen tubing are arranged such that a gas issuing from the at least one gas lumen and liquid issuing from the liquid lumen continuously form an aerosol inside the tube adapter.