If you wig still knottign up ythat mean their still more smaller nots to get out.
As I said take smaller section in this case I got as a small as 1" widths. This is the point where I detangle each section and straighten as I go with a straightening iron to get the kinks out with my heat resistant wigs.
The smell of the silicone spray will dissipate but you can wash it to remove most of that. I just leave it out untied and out to ventilate for 4 days on it's own.