I second the disconnect the battery suggestion - ASAP!! Also, look around (inside and out) to see if something is smoldering or worse (hopefully not).
America: Land of the Free!
1977 300D: 300,000+ miles
American Honda: Factory Trained Technician & Honor Grad.
Technical Advisor to Am. Honda;
Supervisor of Maintenance largest tree care co. in US for offices in Tex.