unvented

The entire lab stank from chemicals in unvented storage cabinets, and became lachrymatory when reactions using excess ethyl bromoacetate had to be worked up outside the hood.

Roger Y. Tsien - Autobiography 2009

(or "unvented" as the late lamented EZ would say, although in reference to knitting rather than to words) some who know far more about this sort of thing than I do

Rabbitch 2008

Since that time, there have been 12 additional reports of exploding unvented jars and another 13 injuries.

Recall redux: Spa Factory aromatherapy kits for kids can explode 2010

Pressure from the buildup of carbon dioxide in the jars that come with the kits can cause the unvented lids to blow off, posing explosion and projectile hazards.

Recall redux: Spa Factory aromatherapy kits for kids can explode 2010

I have no idea whether the Duke Barnim socks were found before EZ unvented the arch herself; she certainly did it before Rutt's book was in print.

Jean's Knitting Jean 2009

Bill Williams, rigid with unvented anger, stood as if planted immovably and insisted on seeing whoever was now in charge.

The Elvis Latte Allie Dresser 2010

Pressure from the buildup of carbon dioxide in the jars that come with the kits can cause the unvented lids to blow off, posing explosion and projectile hazards.

Recall redux: Spa Factory aromatherapy kits for kids can explode 2010

Since that time, there have been 12 additional reports of exploding unvented jars and another 13 injuries.

Recall redux: Spa Factory aromatherapy kits for kids can explode 2010

You may also breathe formaldehyde if you use unvented gas or kerosene heaters indoors or if you or someone else smokes a cigar, cigarette, or pipe indoors.

Public Health Statement for Formaldehyde 2008

Incomplete oxidation during combustion in gas ranges and unvented gas or kerosene heaters may cause high concentrations of CO in indoor air.

Carbon monoxide~ basic information 2008