Does the Oxy-Angel make noise when functioning? lester Ng October 07, 2019 08:29 Updated Follow No. Oxy-Angel emits zero noise so you are confident to walk around with an air purifier as your necklace. Related articles How long will the Oxy-Angel last with fully charged batteries? Can I leave the Oxy-Angel turned on continuously? What is the Oxy-Angel’s effective range? Can Oxy-Angel purify second-hand smoke? How can I tell if my Oxy-Angel is working well? Comments 0 comments Please sign in to leave a comment.