Smoke

Smoke is a hazard that takes the form of dark gas and can be lethal. It is often emitted from fire, including that from flaming enemies. Pikmin that breathe in heavy amounts of it begin suffocating, and suffer detriments to their statistics sometime after until they recover.

=In fanon games=

In Pikmin 2... Again?
Smoke is a hazard in Pikmin 2... Again?. It takes the form of white gas and is used by some enemies. Smoke causes Pikmin to become idle.