Would love to see photos. Why not spray just before you leave for work in the morning so you won't be bothered with odor.

Andy, with the very hot room temperatures and humidity you have to be careful with streps who prefer cool temperatures.

Without seeing pictures I would suggest botrytis blight which will spread so do isolate this plant, unless it has already been sent to strep heaven.

Take the infected leaf in and look at it under the microscope. Without seeing the picture I wouldn't guess at what you have. But I would spray with Neem Oil and Benomil. Check other surrounding plants ever few days.

Nancy

Nancy,
Thanks for the help. You are right, I will try spraying in the morning once a week. I posted a picture in the gallery section but it didn't turn out so hot. My camera doesn't allow for close-ups. The gray fuzz is quite prominent on the right side from the cut on up, fading out as it gets closer to the plant center.

You mentioned botrytis- I looked it up and you are probably right. I was thinking Powdery mildew but that is supposed to be white and form circular patches, which I don't see.
Andy

Here is a link that might be useful: gallery posting

In my conditions I haven't seen what you describe so hopefully Nancy has it right. Streps come from mountains in South Africa, on the summer rainfall, dry winter side of the country. So, they actually do get some heat and humidity in their summers. But, they are up high so don't get high temperatures. I think anything below 80 should be OK--though I think they do like to cool down at night. AV's actually grow where night time temps are the same or higher than in daytime, by the way. Let us know how your treatment for botrytis or fungal problems works out.

For triming streps I recommend using "strep scissors", a term I invented. What they are in reality are Fisker's Ripple Cut scissors, one of many patterns of decorative cutting scissors, which can be found in art stores. I am sure that Austin, with it huge university should have good art supply stores. Other patterns might also work as well or better for simulating the pattern of strep leaves. For example, I also have a pair of "Chirita Scissors" (Fisker's wave pattern). When trimming with them you get a fairly natural look to a leaf.

Thanks Jon,
I'm going to try Neem oil periodically, as well as a little more air movement. We're starting to move into cooler weather, so if I can lick it now, hopefully I won't have to worry about it again until next summer.
Andy