1. Decreased frequency: A sudden decrease in the frequency of passing gas may indicate a blockage in the intestines, potentially caused by colorectal cancer. This can lead to excessive bloating.
2. Foul odor: Flatulence with a bloody or foul odor should not be dismissed as hemorrhoids.
3. Rotten egg smell: If gas smells like rotten eggs, it could be due to colon cancer causing obstruction and increased gas production.
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