What is causing odor

my whirlpool dishwahser is approximately 1 year old. In recent months, the interior has a bad odor, even when just a few well-rnsed dirty dishes are in it. Coul this be a drain issue or should we be looking for something else. We haave a septic but no other sinks or drains are causing an odo

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2947414:01crwdne2947414:0:

Hi @cathy22921

What is the model number of the dishwasher?

Is the filter in the dishwasher clean, you never said?

crwdns2957956:0crwdnd2957956:0crwdne2957956:0

crwdns2934285:0crwdne2934285:0