Isifo esidaleka emoyeni siso nasiphi na isifo esibangelwa ziintsholongwane ezibhabha okanye ezihlala emoyeni nakwi zinto ezibhabhayo ixeshana. Izifo ezi loluhlobo uyakufumanisa ukuba zifumaneka kwizilwanyana kunye nasebantwini. Ezintsholongwane zizifo ngezifo ezosulela ngokuphefumla, ukuthetha, ukukhohlela, ukuthimla, ukufafazwa kwezinto ezingamanzi, kunye nayiphi na into ebangela kushiyeke izinto ezibhabhayo emoyeni. Amaxesha amaninzi izifo ezifumaneka emoyeni zibangela ukurhawuzelela okanye izilonda kwiimpumlo, umqala kunye nemiphunga, kubange ukukhohlela oko, umqala obuhlungu, kunye nezinye iimpawu ezibonakala kumzimba wonke. Izifo ezininzi ezixhaphakileyo ekuqwalaseleka ukuba zosuleleka ngokuhlala emoyeni ziquka ezi zilandelayo, kodwa zibe zingaphelelanga apha: coronavirus, measles morbillivirus, chickenpox virus; Mycobacterium tuberculosis, influenza virus, enterovirus, kunye ne-norovirus. Ezi zifo ziye zifune ukuba umntu ahlale eyedwa angadibani nabanye ngexesha lokunyangwa. Izifo ezidaleka emoyeni zibangelwa kukuhamba-hamba nokubhabha kweentsholongwane emoyeni. Unobangela wazo ke kukosuleleka kwezinto ngezinto, ukususela kwiincindi zomzimba zabantu nezilwanyana, okanye kwinkunkuma. Ezintsholongwane ziye zande ngokuba zihlale kuthuli okanye emoyeni othi abhabhe lee na lee ixesha elide. Umzekelo, ukuthimla kuhamba umgama omde, omlinganiso ubukhulu ngange bhasi, onothi ubangele kusuleleke isininzi sabantu. Ukuphefumla umoya oneentsholongwane kungabangela izilonda okanye ukurhawuzelela, kwaye kuchaphazele nendlela yokuphefumla komntu.