In general, this is usually safe. However, keep in mind that your pot from home isn't designed to be over an open flame or deal with wind and this could cause issues depending on the materials and design of your pot or pan. I once had the wind blow the flame and it began to melt the plastic handles of my pot. It's best to use items that are intended for use on a camp stove. But, we understand logistical and budgetary restrictions, and using a whole new cook set may not be feasible for all.