We have an old Garland Propane Cook Stove. When the Propane Tank gets lower, we smell the gas more in the dining room/kitchen. It used to happen when the Propane Tank was at about 40% - 35%. The Propane Company explained that the "rotten egg smell" in the Gas gets stronger as the tank is depleted. The rotten-egg-smell gets stronger. Lately, the smell has happened at 50% and we have to call the Company to come out and "top off the tank" - which of course means I have to spend money to keep a full tank. This morning the Propane Company sent out a man to check the pressure on the whole line to see if there is a leak anywhere. He did find small leaks on the valve's at the tank, repaired those, but no leaks in the whole line inside the house. But! He presented several more problems - 1. He said I have an "old" gas line, it is yellow and that Code now says I need to have a Licensed Electrician "ground" the gas line. He said the yellow type of line does not have enough rubber coating and can "blow up" in a lightening storm. Common sense tells me I should have it grounded however, my question is: Should I pay the Propane Company to remove the old yellow line and put in a new "black line" which he explains has a thicker rubber coating and will not blow up from lightening like the yellow line might? 2. We have an old dead-end piece of gas line that used to be to the old hot-water heater. It dead-ends in a bedroom closet. For some reason, whoever took it out, did not remove the gas line. It is just capped off with a thick silver looking cap but the cap is shoved down in the sub-floor. Since it is in a closet, is it OK to just leave it there? He did check and did say it is not leaking. 3. Back to the cook stove question: The Gas Man said I can smell the gas since "wimmen have a better sense of smell" and men don't smell it but "wimmen" do. He said there is not any gas leaking in the house and he checked all the burners and ovens too. Do all Propane cook stoves just stink? And, how would I know when to worry about it? I think it smells so bad that we open the dining room window or a door every time we come in the house to let it air out for a while. At night we run the fan to the central air to "on" to keep the air moving. Right now, with windows open, we don't have to do that but when we close up the house, and come home, we have to open the door for a while. 4. Since the Propane Company told me the gas stinks more due to the "old rotten egg smell" in the bottom of the tank, I asked them if they can clean the tank out. They said they have NEVER cleaned out a tank and no one ever does that! I pointed out that if, as they are saying, the smell is worse due to a build up of the rotten egg smell, then it they cleaned out the tank, maybe it would not stink as bad? They claim the only way to clean out a Propane Tank is for ME to run all the Gas out and then call them to fill it back up! I don't want to waste $400 worth of propane. And, if the rotten egg smell stays in the tank, that would not seem to get it out? Any and all information and suggestions appreciated and thank you if you read this whole thing. Thank you.