Careful
Aluminum alloy frames are heat treated and baking a finish can damage this heat treatment. 6061 T6 can take 350 F for up to 1/2 hour. Going to any higher temp will eventually cause degradation.
As far as the stink, the baking lacquer smell will dissipate upon cooling. Make sure the volatiles have flashed off before putting it in the oven, otherwise, there is a flame hazard.
Epoxies will off-gas but the smell also dissipates upon cooling. Best bet would still be to used a thrift-store toaster oven. Calibrate it before using and use aluminum foil to act as a radiation shield to force convective heating.