Is the sausage no longer safe to eat if it tastes a bit sour?

Whether a slightly sour-smelling grilled sausage is edible depends on the extent of fermentation. If the slight sourness is caused by excessive fermentation, it is generally safe to eat. However, if the sourness results from spoilage, it should not be consumed. The details are as follows:

If the sourness in the grilled sausage is due to over-fermentation but is mild, it can still be eaten after masking the taste with seasonings, and typically won't cause symptoms such as abdominal pain or diarrhea. However, if the sourness is due to spoilage or expiration, harmful bacteria may have developed, making it unsafe for consumption. In case of accidental ingestion, prompt medical guidance should be sought for measures such as induced vomiting or gastric lavage to remove toxins and prevent food poisoning or diarrhea. Severe cases may lead to dehydration or lethargy.

When consuming grilled sausages, pregnant women and individuals with hypertension should avoid them, as these products contain numerous food additives that may negatively affect fetal development and patients' health. Additionally, individuals with severe obesity are advised against eating grilled sausages to prevent excessive intake of starch and fat, which could adversely impact their health.