As an Ex-Wing Mong (Tiswoz) I seem recall the H&S lot turning up at Staffords HLS during the early to mid 90s. We carried out a couple of RTRs on the wessex (mainly front end) whilst a H&S bod with a backpack with sensors took noise and exhaust samples.
Verbally, he told us refuellers, that we were slightly mad stooping beside the exhaust with an open line refuel nozzle, but slightly more worrying, was that his initial readings did cause some concerns regarding the toxicity of emissions and the amount of emissions that an individual was in proximity of throughout the refuel.
However, no surprises when the report came back that, no real risk to health existed!
Oh well, i guess I'll have to put down my odd behaviour to just being totally mad!!