1995 Lexus LS 400 gas smell

Could be running rich below will cause it-if there's no actual leakage and charcoal canister is not saturated with fuel

Probable causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.