If you smell gas, you should immediately put out all smoking materials and any open flames. In addition, don't use any appliances, lights, or cell phones as flames or sparks from these devices may cause an explosion or fire. If you smell propane gas that you think might be leaking, immediately leave the area and evacuate the building or area where you suspect that gas might be leaking. Once you've left the area, you should try to shut off the main gas supply valve on your propane tank, if it is safe to do so.
When you have exited the area and are a safe distance from the source of the gas smell, you should immediately report the leak from a neighbor's home or other nearby location by calling Kingston Propane immediately. If you can't reach your propane retailer, call 911 or your local fire department immediately. More than anything, do not re-enter the building until your propane retailer or the local fire department has determined that it is ok to do so.
Finally, you should always have a trained and qualified service technician from your local propane retailer check your entire system and any of your propane appliances to be sure they are leak free before you attempt using them.