You can use any oil. We are all different anyway, so what oil might be beneficial for one, may not have the same effect for others. Sesame is great, and when I pull with it the oil gets really thick really fast. Just get an oil and start swishing away, and if you don't experience relief, change it....eventually you will find the one that works.
And yes, it's hard to pull with a stuffed up nose, but you will be surprised at how it starts to run while you are doing it.