Stupid question but maybe someone has dealt with it.. The PO of our house smoked like a chimney in the attached 2 car garage. I swore we got a hold of the smell when we painted the walls. But since it got humid the concrete has started the usual sweating and it makes the whole house smell nasty. The floor is just bare concrete.. From talking to the neighbours the floor of the garage was his ashtray and butts would sit there for days. What can I do to get rid of the smell? The garage floor is unsealed. Airing it out does not help. I scrubbed 1 half with simple green but a old towel left on the garage floor for days has the smell on it. Any Ideas?