Purchased these recently to cut down on the smell and VOCs from my Elegoo Mars 2 pro and Elegoo Mars 3 Ultra. Popped 1 in into a printer that had resin sitting in it for 4 weeks while I was sick. After putting the lid on and taking my mask off I had to air out my room.
Came back about an hour later and lifted the lid without a mask on so I could check the smell and there was only a vague remnant of the smell left. Have used it when printing since and there is little to no smell at all.
Getting 2 units as a set means I can either run 1 in each printer or swap it out as the battery runs out. Highly recommend!









