Pulled out some deli meat from fridge. My mother-in-law says it’s wasteful not to use it, but it looks bad to me. What should I do?

There are several telltale signs that deli meat has gone bad. These include a sour or off smell, a slimy or sticky texture, discoloration, and mold growth. If the meat has any of these characteristics, it’s best to err on the side of caution and avoid consuming it. Trust your senses; if something seems off, it probably is.
The Risks of Consuming Spoiled Deli Meat
Eating spoiled deli meat can lead to foodborne illnesses, which can cause symptoms like nausea, vomiting, diarrhea, and abdominal pain. In severe cases, it can lead to more serious health issues, especially for vulnerable populations such as young children, the elderly, and those with weakened immune systems. Understanding these risks highlights the importance of making safe choices when it comes to questionable deli meat.
How to Properly Store Deli Meat to Extend Freshness