As Bernie mentioned, you can get an electric-only fridge.
Friend who is dependent on an oxygen concentrator 24/7 had their entire system converted to electricity.
Induction hob, electric heating, the whole shebang.
Warning signs prominent on all four sides, “NO NAKED FLAMES WITHIN 10 METRES” & “OXYGEN IN USE”.
They have received good cooperation from neighbours and CP managers so far.
Amazing the change of attitude when his wife explains her husband’s condition.
(Particularly when you consider that a glowing cigarette butt could produce a fireball which would engulf the next door vans both sides & probably across the road as well.)