Disconcerted by the attack of tear-gas, the green men broke and fled.
Calhoun was familiar enough with tear-gas, used by police on some planets.
To add to the strangeness of the situation, there was a strong scent of tear-gas in the air, which made my eyes water.
One afternoon on the Somme our battery received a severe strafe from 59's and tear-gas shells.
The "tear-gas" ...