Please don't trim any roots that are firm - only mushy decaying ones, or dried out dead ones. You can use drug store type hydrogen peroxide tho if you are only trimming dead roots its really not necessary imo. Some people use original Listerine (the brown one, store brand is good too), pour into a spray bottle and spray. Keep cinammon powder away from healthy roots as it dries them up. Cinammon is good on cuts tho so long as you dont get it on healthy roots, so I just stay away from roots altogether with it lol.
The aerial root on the right looks ok - the one on the left may be dead - I'm not sure. If its dried up you can cut it off
Your plant looks quite well - but as flhiker said - its always a good idea to repot. It looks like yours is potted in bark ? If so - you are probably safe to wait until the plant has finished blooming. If potted in packed moss I like to repot immediately as in my hands that is a certain death for the plant lol.
If you have any questions, please ask - everyone here is very friendly and eager to help