No expert, but I would say an oil leak that is burning on the exhaust for the cup holder one, unless white(sweet smell not oil smell)then exhaust leak. White usually coolant burning if car warmed up and still doing it, usually sweet smell(at least with the old coolants). Usually head gasket, cracked head/engine or some other way coolant getting into the combustion chamber. A video would help a lot. Pull the plugs for inspection and compression check. Monitor coolant/oil levels closely. Cooling systems can be pressure checked too.