info on rmh and breathing problems

I've been talking with a relative who has a family member who was advised by her dr to not install a woodstove.  They have a big drafty house and are cold!  

I thought that an rmh being cleaner-burning might be acceptable.

Can anyone point me to info that they could bring to the dr to ask if this would be okay.  

Thanks for any help!  

Well, i would advise against a J tube at least. Just for the occasional smokeback.

I think a Batch would be better. But there's still the ashes to take into account, and the sawdust from producing firewood. The occasional smokeback too. Which is far rarer than on a J, and that can be nearly completely eliminated.