No P trap here either. Check your rubber bowl gasket, cheap easy to replace. Did you look to see if your vent pipe is loose?
My toilet does not have any sealer at the base. If you have the toilet out, you could line the base contact points with butyl tape.....easy to remove later, and gives a good seal.....but....you have to track down the source of the leak. I doubt it is coming from the toilet itself, unless the seal has gone bad.
1987 Starcraft Nova tent trailer, purch. '87, sold 8.14
2013 Crusader 290RLT bought new, 8.14 lotsa mods!
2001 Ford F-250 7.3
Loving wife, R.I.P., 6/6/19
and Mason the always dirty dog! R.I.P, 2/19