There used to be an ad on Dutch television back in the 80's from a loo paper manufacturer with the punchline Koning, Keizer, Admiraal - ${brand_of_loo_paper} kennen ze allemaal which translates to King, Emperor, Admiral - they all know this brand of loo paper. We (i.e. my father whom we naturally followed in this respect) turned this into Koning Keizer Admiraal, schijten moeten ze allemaal or ...they all have to shit.
Everybody shits, farts, burps... device or no device. I´d say those who feel the need for a device like this are guilty by association of farting and burping even louder than average, why otherwise get something to mask their clearly obnoxious and dare I say noxious emanations in the privy?