A person shows strong unusual hypersensitive reaction when exposed to certain substance present in air.
List some symptoms related to this condition.

Explanation

To address the question regarding the symptoms of a strong unusual hypersensitive reaction when exposed to certain substances in the air, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Condition**:
- The condition described is known as an allergy. It is characterized by a hypersensitive reaction of the immune system to certain foreign substances, known as allergens.

2. **Identifying Allergens**:
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