exterior paint 比 interior paint要污染大一些。似乎不太安全吧，尤其是放碗的地方。室外漆off gassing时间更长，而且成分复杂。室内油漆考虑到室内空气安全，一般是water based.
刷厕所一般就是用semigloss。
Paints with a glossy sheen—like satin or semi-gloss—are best for humid rooms. Instead of absorbing moisture like a matte or eggshell paint would, they deflect it. Glossy paints can resist moisture because they have a harder finish.
