white/blueish smoke

[vorota]

I do frequent stops. Sometimes I shut off for 15-20 minutes. Over the course of last 10/12 days, on several ocasions(not consistently), the exhaust would spill white/blueish smoke as transmission would be about switching from 1st to 2nd(auto). At that time as I am depressing gas pedal, rpm goes up for a few seconds and then after depressing harder on gas, exchaust spits out that smoke for a few seconds and then it dissapears. There is no consistensy in how often. It did it last week a few times one day and more often last 2 days. The smoke has a smell of burned oil, not antifreeze.

Any idea