Nope. Bugs is bugs and diseases are diseases. Bacteria may be considered bugs, but are treated as if diseases. You'll read lotsa home remedies here (and most work just fine, even if only for the person recommending them.) My recommendation is get some systemic rot/bacteria/mold spray safe for orchids. There are three I can recommend (you only need 1 or 2.) Physan 20
Physan 20 I'll let you read the label. It's effective on algae, mild mold, etc.
Another is Thiomyl:
Thiomyl OSG23: Camp Lot A Noise Tropicals which is great for beginning stages of crown, leaf and root rot. It's a systemic.
Another possible is Phyton 27:
Kelley's Korner Orchid Supplies which is a systemic relative to Physan 20.
As for bugs, I suggest several alternatives: Safers Soap, Neem Oil, Schultz brand 'Garden Safe Houseplant and Garden Insect Spray'.
The ones you list (alcohol/water, listerine, etc. are mostly bacteria treatments/preventatives. The ones I list are just as safe and tested for their intended use - not homeopathic remedies.
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Ross
http://orchids-ross.blogspot.com/
I don't do most Dendros or large, "floofy orchids". For me it's minis (like Angraecoides), Masdies, Paphs, and others that crept in somewhere along the line. See my orchid list for complete collection (usually not current.)