Virus or nothing to worry about
 

Unknown oncidium with spot on flower petal. Conditions: indoors, led light, 60-70 F, 50-60% humidity, water once a week. Don’t want to waste a test on it yet. What’s your opinion. Did spray this with Avid two treatments. I am thinking can the spray make those marks on the petal (forgot about that)

Certainly not virus. I suspect water/spray damage. Only on the flowers so plant should be quite safe and grow well.

Thank you for validating

Why did you spray Avid? Did you suspect spider mites?

Yes. The orchid next to it had mites. So wanted just make sure

If you have mites on one plant, they are on all your plants, even if you can't see damage. Mites are outside in the environment so it is impossible to be completely rid of them. They come into your house on your clothing or are blown in when windows are open.

Rather than toxic miticides you can consider spraying all surfaces of all your plants with plain water every 1-3 weeks. This knocks down the mite population, kills eggs and keeps them under control. I do this and I don't see mites in my collection. I also dunk or completely wet every new plant to prevent any hitchhiking mites from getting established.