First thing: tell us where you live so when they're describing someone's horrible, agonizing death in a residential chemical disaster on the news we know it's you.
I have done that distillation in a fume hood. It produced some NO2 but not much - barely visible brown gas inside the glassware and slightly yellow product. You should be able to see and smell it below dangerous levels so you'll have warning.
Keep the temperature low, you only need about 80C for HNO3, and a water trap (mild alkali) will capture both NO2 and HNO3. Do it outside at least once, get a feel for how much gas it makes and how badly it corrodes nearby objects then figure out if your indoors space and ventilation is adequate.
Personally I would be more worried about the HNO3. It will destroy normal joint grease so you're supposed to use H2SO4 on joints to stop it escaping, but it destroyed plastic clamps I had holding the glassware together despite me using H2SO4. I have some metal clamps now but haven't tested them - I think the surface would corrode but they'd hold together. And HNO3 will ignite most organic materials including latex/nitrile gloves so
>>11472831while this anon's link says to wear gloves for NO2, you shouldn't wear gloves for HNO3. If you get it on your skin it'll turn yellow and peel like sunburn after a few days but won't ignite or even hurt, so skin is better than gloves. Wash your hands after.
Don't get it in your eyes. It fumes so don't look into flasks or sniff them. It decomposes over time so don't make heaps or store it in airtight bottles. Use clean glassware. It produces huge clouds of NO2 when it oxidises things, far more than in distillation.
