Humidity, odors evacuation. 

The videos are critical for the following reasons:Too often, the photos on the MLS do not reflect the actual condition of the property.Videos do not tell you everything - for example, a strong pet or smoke odor.

If it is done correctly, it should not have anything to do with your sump pump or any odors.

Getting smoke odor out of a home is nearly impossible  Months later, the smell of smoke remained despite attempts to mitigate and eliminate this odor.  

It is low odor and it is thick paint.

If it’s on hardwood and you were wanting to keep the floors then you have no option but to pull and replaceplease note you need 5 of these for each 5 gallon buckethttps://www.homedepot.com/p/PPG-Scent-1-oz-Fresh-Air-Odor-Co... 

I was thinking in just showing up and saying that there is a strong odor downstairs and it could be toxic, so I have to go in immediately, then take pictures.

I think I found the main source of the odor and just killz'd it.

Also, ODOR is a huge issue.

I am sure he attached his information to the mailer, there is no harm or foul in calling and discussing potential options!