Thanks to everyone for the helpful replies. A couple of avenues to pursue - it never occurred to me the odor might come off in layers, to keep trying the Armor All. I also accept that it may not be possible to eliminate the odor completely, but I am certainly going to try.
Since it may take a while, I bought another pair of low power binos for handholding. This will help me be patient with the process of deodorizing the 7x35b. I purchased the 8x42 Ultravid BLs from the classifieds here. I have spent more than I intended, but c’est la vie. I may never buy from eBay again.
I will report back when I reach a conclusion on the odor removal, in case it helps someone else.
Laura