Can you get high from kissing someone high on heroin?

Kissing someone who is high on heroin won't result in a high for the person doing the kissing. Heroin is primarily administered through methods like injection, smoking, or snorting, and its effects come from direct absorption into the bloodstream. While you might experience some secondary effects from residual substances in their mouth, it wouldn't produce a noticeable high. However, being around someone under the influence can still pose risks due to the potential for impaired judgment or behavior.