Will Smoke fluild set off "Smoke Alarms"..

Have never had either type go off even while running 4 MTH engine pairs. 

It's conceivable that it could set off an optical alarm, but I don't have any of those.  I've never seen it set off an ionization alarm, and of course the simple temperature activated alarms are only set off when they reach the set temperature.  Mineral oil vapor isn't hot!

As a volunteer firefighter I can say my company has never responded too my house and I have had it so you couldn't see the other side of the layout. Of course now that I have the Chief into trains I guess hey would like to respond. There are now four of us actively into O gauge out of 25 so odds are getting better.

If you had that much smoke (to set off an alarm)floating round the room I would not want to be there.

i have set off smoke detectors in hotel rooms by simply turning on the room heater.  no visible smoke, but often a slightly less-than-fragrant odor.

It's not smoke.

There is no combustion.

It's mineral oil vapor. Harmless in all ways. Nothing is burning.

And, so long as you don't put "fragrances" (there should be a law...) in it, it smells good.

I’ve ran 6 units at once with smoke... no alarms even when the train was right under one.

DanssuperO posted:

I researched and read  e cigarettes could set them off will our smoke fluid //?  Would the type make the difference their are three types any one better for our train room..  Ionisation or Optical alarms orHeat alarms   Thanks for letting me know which one is best  or your experience if you have installed  one in your train room.......daniel

Yes, mine go off! It depends on what type and/or brand you have. They also went off at our grandson's house.

I’ve not set them off from running half a dozen or more from the layout on 42” high. However, one of the tracks suspended from the ceiling passes almost directly under a smoke detector. Set on medium, or high, my double headed mikado, 2-8-8-2 mallet will set it off. They don’t on low.