Sunlight is the best cleaner is something that I’ve heard before, it applies here. That would be one advantage over indoors, hadn’t thought of that before but does make sense also.
Wish I could test this myself but I’m stuck indoors for now, so an uv light will have to do for me. That was one of the selling points, it kills virus, bacteria and other bad things.
So my thinking has just changed on putting plants out for a day and then back inside. I used to think it was foolish and risky, possibly bringing in pests. But as long as careful could actually produce cleaner healthier plants.
After thirty years growing, still learning.
Sure UV rays are helpfull to kill virus or bacterias. Be carefull when putting indoor plants out as they must adapt slowly to the UV rays before, so you must bring them out very carefully, first in the shade for hours before full sunlight.