Symptoms of a leaking gas can differ significantly depending on its severity Some common symptoms include an peculiar smell hissing or squealing sounds headaches sickness vertigo and weariness Moreover you could also undergo shortness of breath heart pains rhinorrhagia and eye irritation If you suspect a gas leakage it's essential to promptly evacuate the vicinity and contact emergency services Do not endeavor to manage a gas leakage yourself; leave it to the trained professionals to resolve the issue safely