As a child of the 40's who chewed his lead soldiers, lived in a perpetual cloud of organo-phosphates and organo-chlorides to keep the fleas, mozzies and flies at bay,used asbestos for everything, spent many years machining particle board (phenolics -> cancer), thirty years on a chopper gun in a fibreglass factory (too many chemicals to list) and was smoking a packet of champion ruby a week by the time he was fourteen, I am somewhat bemused by people's obsession with the vague possibility of a few micrograms of something that may or may not be a bit off, being flushed out of a pump, especially in this 21st. century chemical world.
I can understand the retailers beating this drum, because when some enterprising brewer goes out and bulk buys a good deal, it affects the retailer's bottom line which we know is being undermined by the explosion in on-line shopping.
Just remember one thing folks, everybody's brewery has one deadly poison in it. It is called alcohol and although none of you will admit it, it will kill more of you than the PVC you ingest from filling up your rig with the garden hose.
I've had my spray and shall now slink off and don my flack jacket and heavy weather gear. Cheers.