Objects can also be affected by the quality of indoor air, which has gotten worse in recent years, or by volatile fluids used for conservation (such as alcohol or toluene), so conservation experts are beginning to pay much closer attention to controlling indoor air quality.
又因為空氣汙染、室內通風不良，或所使用的修護材料（如酒精、丙酮）揮發後也會影響文物，近年修護師也逐漸重視室內空氣污染的防治工作。