The fume oil is composed of the following 4 main components.
Nicotine salts: Compounds of nicotine are more easily absorbed and excreted than nicotine.
Propylene glycol: The carrier of fragrance in medical grade tobacco oil, which produces a small amount of mist after heating.
Glycerol: Natural plant glycerin produces throat-throbbing sensations. Glycerol is a commonly used food additive.
Food flavor: common food additives.
So, once the liquid is in your mouth, don’t worry too much. You can rinse with clean water.