Battery R/C. No flame. No carbon monoxide.
There was a cautionary tale published in
16mm Today several issues ago by a member who very nearly died from carbon monoxide exposure from live steam locomotives operated indoors. I'll ask if I can have a .pdf copy to post here.
Thanks for checking!

Live steam indoors with open flame and pink foam ...... be very careful if you please!
Or will it just be the electrics running down in the basement?