If it is a figure, you can turn it off in the Body parameters and it turns it off for all children, hair, and any props parented to the figure.

Of course you need to do this for each figure.

Also Netherworks Scene Toy allows you to highlight whatever you want ,in it's listing, right click and turn off the emitter light (I know as it was a feature I asked for, lol).  Amongst all the other things it does.  

 

 

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Consider me insane if you wish, but is your reality any better?