Hello Filibis, That weird reflection right besides the tv furniture on the right, that redish thing, and yeah maybe some noise I could turn down with DMC?

Hello everyone, I wanted to know if somebody could help me out. I have been getting this weird red fog or mist in my renders, interior and exterior and I wanted to know if it was related to the materials, the hdr photo or the sun, I´ll attach a photo down below thanks for the help!