Was That Fake? Gas masks for mosquito spraying & Hillary laughs at Irma

Were we required to wear gas masks during mosquito spraying because of potential brain damage?

No.

You may have seen a warning to use gas masks during post-Harvey mosquito spraying -- to protect yourself from a neuro-toxic insecticide that "causes brain damage".

The truth here is that the insecticide being used can be considered a neuro-toxin.

But, the amount being sprayed is not harmful to humans or pets.