After moving into my new home, when I connected the dryer, one head of the gas connector (to the house gas outlet) was broken, so I bought a new gas connector (Brass Craft Coated Stainless Steel Gas Connector, ½” OD Tube, 48”, Item # 2661311431.6). Following what kind of sealing material being used before, I put Block Seal paste on the connection of ½” male adaptor to the house gas outlet, and white seal tape to all other connections, including two ball joint heads of the gas connector, the gas connector to the ½” male adaptor (to house gas outlet) and to dryer gas inlet. After open the house gas outlet valve, I put liquid detergent to all external gas connections and did not find any leaks. Now the dryer works fine for 19 days. But occasionally I smell gas, but more times I did not smell anything. My wife has the same feeling. The dryer is in the basement laundry room. The basement windows are always closed due to winter, only the door was open several times a day. So basically the environment is quite sealed. If there is gas leak, the smell should accumulate and become stronger. But we do not feel it. I consider re-connecting all connections with the Block Seal paste. But I am worried that I may create more leaks or even break the gas connector. How can I be sure there is no leak, or how to find where the leak is?

Thank you. Adam