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(FOX 26) - 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.