Had main drain snaked amonth ago. Now it smells bad down there. When I open the main drain I see a lot of tissue and everything else you'd flush. Is this normal?

Please explain "open the main drain". No, seeing tissue and solids is not normal. Septic tank or municipal sewage system? Why was the line snake a month ago.

If you respond to Harold's questions, we will be able to help you, Thanks.

John