Only bathroom

After dinner my roommates decided to bleach and dye there hair in the bathroom. It is a couple of hours later and the only time they have been out of the bathroom the bleach smell was so strong you could smell it outside of the closed bathroom door with the fan on and window open. So now I really have to go pee but that’s the only bathroom and all places around here with public bathrooms are closed now. As well I want to go to bed as it’s 10:30pm and I have somewhere to be at 7am tomorrow. Also I did think of peeing outside but our yard has no fence so very visible from the street.

Edit: I didn’t think it took this long to dye hair… they are in the bathroom still, I long since missed the time to use the bathroom when they were not in it just strong smell.