Secondhand smoke

Yes, is really irritating. My neighbour is a smoker and he wil come out to the corridor to smoke. Throwing cig butts onto the floor. Thankfully, they r nt always at home. N whenever I encountered I wil shut my door, switch on fans to full blast n stay away frm main door. When im outside I wil deviate from smokers too. I guess is very hard to totally avoid as we r surrounded by them.