The same happened to me too a couple of weeks ago, when using Sennheiser G3s and MKE-2s in a cooking show. I had several different induction ovens in the set/shoot.
So the interference on the G3s was from non to extrem noise gate. I had a room tone boom too, so in post we fixed the gated sound in the mix.
Anyway, I found this plausible explanation by Larry:
So if you guys have a chance, use other transmitters than G2 - G3, when shooting with induction.
Any experience with other brands, besides Sennheiser?