yeah bro, I know that problem all too well, sometimes the stink just sticks to ya don't it?
one thing that works for me is that Ona Gel stuff, only the fresh linen one tho, I find the others too overpowering or they just don't smell natural enough,.so, fresh linen works the best for me as its sort of a natural smell, get a 1L jar, open that jar, then your tent and your garage will still smell like you've just hung your washing out, or a laundry room... works a treat, I close the tent then close the lid.
Hasstle I know but cheapest option. Or... get a bigger tent where you can get yourself in it aswell, something else ive tried but it don't stop your clothes stinking of it, unless your uber careful or in just shorts. Get changed outside.
and yep, done that in the stinking hot summer, where the smell is even worse.
I think Green Qube are bringing out a sort of airlock attachment thing you put over your existing tent,. unzip it, get in, zip up, then unzip tent, don't know anything more about it just heard it on the 'herb vine' lol. but sounds a good idea