He's all confused now.

Are you sure that this is a good idea?  The guy just blew up his home and now you're inviting him into yours?  I mean, I get the whole "Be a good neighbor," thing, but you have to draw the line somewhere.  It's not like the house just happened to blow up because he accidentally left a light on, or there was a previously unknown gas leak that found itself a spark.  No, Dr. Noll was mixing chemicals in his lab (probably located in the basement) and ended up blowing the doors and windows out of the house and filling it with smoke.  If I were you, I'd keep an eye on my chemicals.  He might get a flash of brilliance and try to experiment in the bathtub and then you won't have a house either.  Still, I guess if you're going to be business partners, letting him stay at your place while his is being either rebuilt or fixed up is the right thing to do.

And yes, Dr. Noll, it would be wise to keep your formulas straight.  I don't care how good the stuff smells, if you blow up people's homes with it, you're not going to get any repeat business and word of mouth will surely spread.  Plus, as previously stated, if you perfume the entire tri-state area, people aren't going to want to buy it when the smell finally fades away.
Now Dick's sleuthing skills are starting to kick into gear.  Sure, he doesn't use perfume, but Tess does, so it's safe to say that he's had some experience with it, and therefore all of the little red flags are finally starting to go up.  Yes, perfume is supposed to smell, but it's not supposed to gas you (though some people may cause you to think otherwise), and it certainly isn't supposed to explode.  I mean, that's just bad for business all around.  I just hope that the smell fades away before everyone starts to get sick from it because then you'll get that delightful nauseating smell that can only come from the combined forces of perfume and vomit.  We'll just have to wait and see whether Dick decides to shut down this little operation right off the bat, or if he decides to go along for the ride because he's already invested too many strips in it to give up now.  

(And shouldn't our friend from the CIA be heading over here?  I would think that a mysterious home explosion caused by perfume would be the most likely place to track down a guy known for causing explosions, but that could just be me.)