Can I mist my plants when they are in Flower?
Not a good idea
Moisture leads to bud rot.
Misting, even if not on flowers will raise the humidity around the plants and lead to the same thing.
Yer sure if black mold has a street price of circa $1000 a gram.
Otherwise bad idea 
I agree not a good idea. What would you accomplish by doing it? Watering your plant will accomplish the same thing. Good luck with your grow my friend
What are you gonna to mist them with