They make those odor neutrelizer cones that are made of that gooey gel stuff. You just pull the cover of the cone up and sit in on a dresser or table. It seems to work well but it takes a while to really take affect. Its not something that will cover it up really quickly.

Yeah parents aren't stupid. The second they smell a shit load of aresol spray like Axe or something and your not leaving for a hot date it sets off alarms in their head saying "What is he covering up with the spray?"

I suggest you open your window and buy a box fan and sit the box fan in the windown BLOWING OUT and turn it on and smoke near it. The fan will create a suction that will suck all the smoke out of the window. But if your room is on the same floor as your moms this may not work as the fan would create some noise.

Good luck buddy keep toking...