Yeah, dust is not what you need to care about. But it’s not good to have a printer indoors.
There are enclosed printers that you can plug ventilation ducts that solve this problem. Some have filters, but any filter without a molecular sieve (usually activated coal) won’t help you, because the problem isn’t with dust.
Resin printers also give you problems on handling the resin. It’s not enough to enclose those printers, you need protection equipment and a place to deal with the supplies and recent prints.
Components from hardware stores have all kinds of composition. If you don’t know what it’s made from, why would you assume it’s safe?
Even “stainless steel” can have all kinds of different compositions, some highly allergenic, some out-right toxic.