It is generally safe to drink soda that has been in the fridge overnight and then refrigerated again with ice cubes added, as long as it has been handled and stored properly. However, there are a few considerations to keep in mind:
Quality: The taste and quality of soda may be affected by being exposed to the air and temperature changes. Over time, soda can go flat and lose some of its carbonation, which can make it less enjoyable to drink. Additionally, if the soda was left uncovered or inadequately sealed in the fridge overnight, it might absorb odors from other foods in the fridge.
Safety: From a safety standpoint, soda itself is not prone to rapid bacterial growth, thanks to its high sugar and acidic content. These factors inhibit the growth of harmful microorganisms. However, if the soda has been contaminated with other foods or substances, it could pose a risk. Always inspect the soda for any signs of spoilage, such as unusual smells, appearance, or off-flavors.
Hygiene: When adding ice cubes to the soda, make sure the ice is clean and free from any contaminants. If the ice has been stored in a clean ice tray or ice maker, it should be safe. However, if you're unsure about the ice's quality, it's best to use fresh ice cubes.
Carbonation: As mentioned earlier, soda left in the fridge overnight might lose some of its carbonation. Adding ice cubes can further dilute the soda and contribute to a decrease in carbonation. If you prefer your soda to be fizzy, it's better to consume it without the ice cubes.
In summary, while it is generally safe to drink soda that has been in the fridge overnight and then refrigerated again with ice cubes, the taste and quality may have been affected. Always use your senses to check for any signs of spoilage, and if the soda doesn't seem right, it's best to discard it to be on the safe side. If you're concerned about maintaining the soda's carbonation, avoid adding ice cubes and enjoy it straight from the fridge.