The snick of the lock makes her jump a little - suave and confident she is not. In fact, she's a bit anti-suave at the moment, twisting her fingers together as the nerves try to take over.

"U..um. I didn't ask, earlier, it... it never seemed to be much of a consideration with... well, h... how does this work with..." Deep breath, pretend its some sort of epidemiology study, come on. "Transmission of infectious diseases, and protection?"