@Bobby Larsen, I've read this entire thread and would like to take a stab at encapsulating it as I actually understand, or at least think I do, everyone's responses.. 

Fresh paint, carpet cleaning and general cleaning encapsulates or removes odors. 

., encapsulated).  

Owner occupied brick rancher (3/1.5) in excellent condition with original hardwoods, new HVAC, vinyl windows and encapsulated crawl.

I removed a 20’x20’ room full of pipes with asbestos in every stage of being wrapped on the pipes and falling off them some years ago and they also touched up some other encapsulated pipes around the basement that were a bit troublesome.

Can we use encapsulation ourselves and be ok?

Anyone know any crawl space encapsulation contractors that offer that do a good job.

If it is starting to wear, look at encapsulating it so anything friable is not releasing fibers into the air.

There are different types remediation and if it was encapsulated and then disturbed through a renovation/repair/etc. what was once considered "safe" may not be anymore.

The seller would agree to your ability to test for lead as part of your offer packet/contract to purchase.Mitigations can be removal or encapsulation.