Compendium of Helpful Writing Tips, Pt. 1

The first entry in a series of quasi-useless facts found during numerous hours of research: 

A grenade blast is loud enough to disturb the inner ear, causing dizziness and instability.

Bullets cause penetrating thoracic trauma, which can result in kinds of pneumothorax and hemothorax. 

Space smells like gunpowder and raw meat.