you'll be fine ....just roll the windows up..make sure no one is around though were you know you wont get caught...enjoy your blunt or bowl....right before your getting ready to go back inside rememeber to put on some lotion or use some hand sanitizer...right before you go back inside air out your car and open both your doors for a few seconds to let it air out..leave one or both of your windows cracked...also spray some type of freshner...oh yeah some visine helps to..im telling you you'll be alright...i did a couple of times in my dads car when i was up north