So, in other words, you'd rather make it 'look like' it is safe while breathing the stuff yourself and let them breathe it too.
Wow. Now, there's a solution! Talk about truth in behavior
I've been wearing the "Darth Vedar" for years without any issues. Most clients, you know, are reasonable intelligent people.
And it does not send the wrong message, just the opposite. I tell them that it is a safe cleaner and that I get exposed to it on a daily basis. I explain that it will be rinsed out and also ask them not to be in the room while I spray.
And here's the kicker, Jim: Most people actually appreciate it. They assume (rightfully) that if I demonstrate care (this time both for myself and them) it will also be manifested in everything else that I do for them.
And it does!