regarding bras and masks, there are several quotes like this one:
Then in 1958, she gave a presentation at 3M simply titled: “Why,” which explained why 3M should go into this business of non-woven products in a bigger way. She presented over 100 product ideas for the technology, and was assigned to design a molded bra. But the late ’50s were tough for Turnbull, who spent a lot of time visiting sick family members in hospitals. She lost three loved ones in quick succession. And out of that grief came a new invention: A “bubble” surgical mask that 3M released in 1961, that yes, takes its inspiration from the cup of a bra. When 3M learned it couldn’t block pathogens, the mask was re-branded as a “dust” mask.