I have a funny feeling in my left arm could it be gas?

Probably not. Gas is not likely to cause discomfort in your arms, though gas has been known to mimic many cardiac symptoms. I would recommend you seeking further care for this situation.
What are takling. If i understand you correctly, gas could give a lot of problem and could (possible cause that feeling. But the most important thing when this happened, to check for heart problem and other like gallbladder disease stomach problem and the list go on. I hope the best for you. Thanks.