It's hard to figure out legitimate information. In regards to the fumes produced by resin printers, you'll have a very wide variety of responses regarding how dangerous they are. There will be people claiming constant nose bleeds and headaches. At the same time, others are talking about medical professionals checking their massive company resin printing rooms and finding nothing potentially harmful.
Essentially, it's probably better to just err on the side of caution and always wear a hazmat suit.