If you have any of the old hardware stores around you they likely carry it.
Ace Hardware carries Rutland products, as does Aubachon.
Read the labels on other silicone sealants and you should see what they are meant to be used for.
Also the usual place to use sealant is on the inside of the pipe joint, the outside can be taped if needed.
If you wait longer perhaps the smell will eventually dissipate assuming it is the RTV used and not a leak in the vent itself (even those can ash seal over time only to reappear when a good cleaning is done).
Ace Hardware carries Rutland products, as does Aubachon.
Read the labels on other silicone sealants and you should see what they are meant to be used for.
Also the usual place to use sealant is on the inside of the pipe joint, the outside can be taped if needed.
If you wait longer perhaps the smell will eventually dissipate assuming it is the RTV used and not a leak in the vent itself (even those can ash seal over time only to reappear when a good cleaning is done).