Final answer:
The use of strong alkaline solutions or high-pressure water cleaning are aggressive procedures that can help remove severe smoke damage from exterior brick and mortar masonry.
Step-by-step explanation:
Severe smoke damage to exterior brick and mortar masonry may require an aggressive procedure such as strong alkaline solutions or high-pressure water cleaning.
Using strong alkaline solutions can help in cleaning the smoke damage, but another effective method is high-pressure water cleaning. This technique involves using water at a high pressure to remove smoke residues and stains from the surface of the brick and mortar masonry.
It is important to note that when using strong alkaline solutions or high-pressure water cleaning, adequate safety precautions should be taken, and it is advisable to seek professional help to ensure the process is carried out correctly.