My dad has been painting with oil paints and using paint thinner ect to do his paintings and clean his brushes he does this in the kitchen and because it's cold it's not ventilated. I'm obviously panicking how much damage this can do as I'm 38 weeks and worried about breathing it in even tho it's in minimal amazing can someone let me know how actually unsafe this is and what can happen . Or if it's fine and I'm just being dramatic and google is causing unnecessary fear