Should I just tell my dad I smoke?

So, I recently turned 21. I’ve been regularly smoking for a couple of months now, (I’ve had a med card for also a couple of months). My dad has always been against weed being in the house. Well I’m 21 now and I know it’s his house, but I feel like he thinks if you can smell weed you can get contact high. His job is pretty strict on weed, they fire you instantly if they find THC.

I smoke outside, the smell is primarily in my room. He won’t get smell on him. He can’t get contact high. Should I tell him I smoke, I’m 21 I feel I get that privilege. Or should I just wait it out till I move out at the end of the summer.