Item

Increases

(N, %)

Decreases

(N, %)

No Relation

(N, %)

Do not know

(N, %)

Incense and candles

485 (37.7%)

65 (5.0%)

504 (39.1%)

234 (18.2%)

Air fresheners

454 (35.2%)

191 (14.8%)

412 (32.0%)

231 (17.9%)

Gas stove for cooking

545 (42.3%)

139 (10.8%)

293 (22.7%)

311 (24.1%)

Fixed carpets

555 (43.1%)

117 (9.1%)

389 (30.2%)

227 (17.6%)

Paint for walls and furniture

619 (48.1%)

83 (6.4%)

348 (27.0%)

238 (18.5%)

Glue for fixing furniture, carpets, etc.

687 (53.3%)

34 (2.6%)

302 (23.4%)

265 (20.6%)

Plywood

178 (13.8%)

103 (8.0%)

593 (46.0%)

414 (32.1%)

Electrical appliances

283 (22.0%)

49 (3.8%)

772 (59.9%)

184 (14.3%)

Dry cleaning

245 (19.0%)

277 (21.5%)

373 (29.0%)

393 (30.5%)

Reducing humidity

202(15.7%)

467 (36.3%)

257 (20.0%)

362 (28.1%)

Using naphthalene to get rid of molds

358 (27.8%)

394 (30.6%)

140 (10.9%)

396 (30.6%)

Wallpaper

271 (21.0%)

148 (11.5%)

519 (40.3%)

350 (27.2%)

Disinfectants used in swimming pools

363 (28.2%)

501 (38.9%)

186 (14.4%)

238 (18.5%)

Smoking

1227 (95.3%)

28 (2.2%)

20 (1.6%)

13 (1.0%)

Raising pets, birds inside home

984 (76.4%)

47 (3.6%)

171 (13.3%)

86 (6.7%)

Plastic floor tiles

230 (17.9%)

253 (19.6%)

448 (34.8%)

357 (27.7%)

Indoor plants

127 (9.9%)

929 (72.1%)

146 (11.3%)

86 (6.7%)

Air exhaust in kitchens and bathrooms

56 (4.3%)

1150 (89.3%)

65 (5.0%)

17 (1.3%)

Cloth dryer inside the house

105 (8.2%)

542 (42.1%)

432 (33.5%)

209 (16.2%)