i was walking back to my room just now in student accommodation. I knocked my friends door as a joke and ran round the corner where you then go through a closed door to get in , there are a few rooms in this hallway and then another door to open to get out ( so smells are trapped as there is a door on either side) I went through and could smell weed, very strong, I kept walking and went through both doors... But now I feel funny, like dizzy? I have never smoked in my life / done drugs so am I concerned. Is there a chance I have been affected and if so how long will this last for!