You did the right thing, don’t let anyone pressure you to feel otherwise. Retail stocks of masks for things like painting or carpentry are not at all related to depriving medical supplies. Also for N95 masks, the filter size is about 3x wider than the size of coronavirus. Meaning it provides _a lot_ of protection. It’s not a way to fully prevent anything, but a door only 3x wide lets in way way way fewer things than not even having a wall or door at all.