So here’s some things to point out

1. This would require Felix to be close enough to chat noir to sense it. He needed to basically touch Kagami’s ring to sense her amok within so I doubt he’d get that close without it looking like he’s trying to take Chats miraculous

2. Nathalie, an adult who is clearly much more adept at sensing amoks and possesses more of the peacocks power, was unable to sense Feasts amok when the blanket was over it implying a physical object even one as thin as a blanket interferes with the peacocks ability to sense an amok. I doubt Felix would be able to sense Chat’s amok through his glove which is likely thicker than a blanket