Its wife is nagging it again and it needs a minute or two to clear its head.
What color smoke?
How much smoke?
Where is the smoke coming from? (Engine? Exhaust? Radiator?)
Are there any MIL codes?
Is your check engine light on?
Whats the oil level like?
Are there any leaks under the hood? under the vehicle?
When does it smoke? (on startup? when hot? when air conditioning is running? after vehicle shutdown?)
Can't really tell "what" without the who, where, why and when...