To Light or Not?

I bought 2 of these candles in the summer from the money we got when we finished work.
I have deliberately kept them for the winter nights to make the most of them. They weren't exactly cheap so I am reluctant to light them for long if at all!

Tonight I am lighting this one for the first time and in the 20mins it has been lit the smell is filling the room. Mmmm.


Feeling better today, hopefully I have got away with catching this bug.