alright try this out, its a combo of 2 methods ive done to reduce the smell of smoke, if blow out a window and spray down itts probably be completely undetectable.

so....get a water bottle (poland spring or anything else, doesnt rlly matter) and get a nail or something reasonably sharp and metal, heat it up with a lighter and push it through the bottom, moving it in circles till the holes about the size of an eraser. now, get some fabric softeners (those sheets that you throw in a dryer that smell really good) and cotton balls, first stuff 3-4 dryer sheets through the top onto the bottom, or until you think its enough, and then pop a bunch of cotton balls in until its almost full. k! your done! now all you do is get the top layer of cotton balls a little bit damp (spray bottles work well)and blow your hits in there, preferabbly out a window. it should work wonders!