I don't see this talked about often or in a lot of beauty stashes, But it's actually one of my most important needs when it comes to painting nails: A face mask. No not the kind that smells like pumpkin, The kind that your dad uses when he's fixing the paint on something. Why? Because you are sill inhaling paint fumes and they can irritate you and make you cough. Especially if your doing it often or really like to get up close and detailed. I recommend that you try a few and see which works best for you. You don't need to use them all the time but definitely something to have on hand.
Here are some I picked up from the 99 cent store.