Which of the following is included in Fume Category A?

• A. Fresh air only.
• B. Strong irritation to eyes, pungent, acrid.
• C. Sweat, locker room, dirty sock, rancid cheese, wet dog, burning rubber, musty, sour milk, fresh oil, sweet, mild.
• D. Water, soap, clean cotton.

Answer: (C)

Fume Category A covers mild, non-irritating odors you can notice in normal cabin air. The list that includes sweat, locker room, dirty sock, rancid cheese, wet dog, burning rubber, musty, sour milk, fresh oil, sweet, mild represents that range of everyday, identifiable smells that are noticeable but not strongly irritating. It shows common odors rather than an odorless environment, a strong irritant, or clean, neutral scents. Fresh air only is essentially odorless, strong irritants would fall into a harsher category, and water/soap/clean cotton describe clean items with minimal odor. So the best match is the set of mild, everyday smells.