Chameleon Skin. The troglodyte has advantage on Dexterity (Stealth) checks made to hide.

Stench. Any creature other than a troglodyte that starts its turn within 5 feet of the troglodyte must succeed on a DC 12 Constitution saving throw or be poisoned until the start of the creature’s next turn. On a successful saving throw, the creature is immune to the stench of all troglodytes for 1 hour.

Sunlight Sensitivity. While in sunlight, the troglodyte has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight. 

Multiattack. The troglodyte makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) piercing damage.

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) slashing damage.

Cave Dart. Ranged Weapon Attack: +5 to hit, range 20/50 ft., one target. Hit: 10 (1d10 + 5) piercing damage.

Alarm Stink. A troglodyte guard can release a powerful stench as a free action. Any creature other than a troglodyte that starts its turn within 20 feet of the guard must succeed on a DC 12 Constitution saving throw or be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns. On a successful saving throw, the creature is immune to the stink attacks of all troglodytes with the same or fewer Hit Dice than the troglodyte guard.

The alarm stink alerts any nearby troglodytes and can convey one simple word's worth of information (such as "intruders!", "food!" or "DRAGON!!"). In still air other troglodytes can smell it from 80 feet away, but wind currents can increase or decrease this distance.