So I have a mask that I got from a friend but it smells like Cig Smoke. Is there anything I can do to get rid of the smell?
This is hit or miss. If it has been over exposed to smoke the smell may never fully go away. I had an old H78 with this issue, I filled it with fabric softener sheets, covered it in a towel and left it in the shed for 3 days. It got rid of the smell 99%
I received a blank from Nik Dresios that smelled like a cigarette factory. I hung it outside for about a week and that took most of the smell out of it. Then brought it inside and placed a box of baking soda in it and that absorbed the rest of it after about another week. It sucks when you get a mask that smells like a cigarette butt. 
I got mine from nik smelling cigarettes as well.
No one is gonna like me for saying this, but it works… If its a fairly new mask that isnt rotting put it in a pillow case with some frabic softener sheets in it and put it in the dryer for around 15 minutes… Dont worry the latex will be ok…
Cleaning the inside and outside of the mask with dishsoap helps, You put some sunlight or dawn dishsoap then squirt it on some damp paper towels.
Wipe that over the whole surface of the mask after your done wipe it with some damp paper towels with only water and let it dry with a fan.
If that doesnt work you can try some alcohol free baby wipes to wipe the mask down
Try an ozone machine. The plates generate ozone that permeates the smoke molecules and destroys them.