It's important to exercise caution when it comes to consuming perishable foods that have been left in the fridge for an extended period.
In the case of a Subway sandwich that has been refrigerated for two days, it's best to err on the side of caution and not consume it. Perishable foods like sandwiches can potentially harbor harmful bacteria that can multiply and cause foodborne illnesses if left at room temperature or in the "danger zone" (40°F to 140°F or 4°C to 60°C) for an extended period.
Even if the sandwich appears and smells fine, there might be bacteria present that can cause food poisoning without noticeable signs of spoilage. Eating such food can lead to symptoms like nausea, vomiting, diarrhea, and abdominal pain.
As a general food safety guideline, perishable foods like sandwiches should be consumed within a few days if refrigerated properly. If you're unsure about the safety of a food item, it's better to discard it to avoid any potential health risks.
Remember, when in doubt, throw it out. It's always better to prioritize food safety and avoid the risk of foodborne illness.