IIRC, B1a s from Waddo often carried out high altitude radiation level sampling around the world and were put into the shed on their return. Now, changing the Brake Chute every 28days was an OOP task so if the jet didn’t stream on its return, we had to go and change it in situ. Ergo, I spent many an hour straddled over the brake chute compartment in the ECM bulge at the back. I don’t think I noticed it glowing at any point, but in later life the results of a routine sperm count did give me some concerns....The Doc at the time said we would be unlikely ever to have kids...🤭
However, 50 plus years on we have two strapping lads and three lovely grandchildren, and I still have all my hair...
Continual use of solvents in maintenance activity is another matter.