Scivillage.com Casual Discussion Science Forum

https://bigthink.com/health/people-allergic-to-me-skin/

KEY POINTS: Some people are convinced that the gases emitted from their skin cause allergy-like reactions in the people around them. Sufferers have dubbed the mysterious condition "people allergic to me." In a recent study, researchers compared the skin gases of 20 people who believe they have the condition to those of 24 healthy controls. The "people allergic to me" group emitted significantly higher amounts of various compounds with offensive odors, the exposure to which could lead to adverse health effects... (MORE - details)

I'd wager that most heated gases come out of the mouth in its moments of making noises. It's like standing in front of the exhaust pipe of your automobile. In this case a warm humid mix of odors of food, coffee, cigarettes, bile, and saliva!