increasing

It started faint - seemingly near the front wheel right wheel well a month ago. Now it's grown to be strong enough i can smell it in the car, 20 ft behind the car when parked, and even as my wife drives into the driveway I can smell her coming if the wind is right...... obviously i can't find...

Revs increasing to 3000 on climb out of village. - Any Ideas??? OK, last week my wife was driving our L322 (2003 4.4 Petrol) into Salisbury from Devizes. Through one of the villages (Shrewton) there is a slight hill as you are coming out of the village. Normally the car drops down a gear...