There are many new flavors on the market that crack tanks for a variety of reasons. Yours may not be on this list but if it has citrus or cinnamon type flavoring that could also be the reason.
Sour flavors
Malic acid
Citrus acid
Cinnamon like "atomic cinnamon" types, not warm cinnamon like cinnamon coffee cake, this is okay
Wintergreen juice or flavoring
TPA ripe banana flavoring
TPA honeysuckle flavoring
TPA maraschino cherry flavoring
TPA cherry blossom flavoring
TPA root beer flavoring
Mrs. T's strawberry shortcake, snickerdoodle
KBV Hummingbird nectar
mimosa(because of the orange)
cola(because of cinnamon)?
Vapor Renu Teaberry, cherry vanilla (possibly most of their flavors)
Vapor Renu Mt. Dew baha blast and Strawberry limeade
Oil based/e liquid that contains essential oils, when mixed with pg/vg, creates esters which will crack plastics
E liquids that contain triacetin, used in vg liquids to carry flavor more effectively
Vapalicious Gooey Butter Cake
Nutmeg
Clove oil
Mt. Dew flavoring
TPA Cinnamon Danish flavoring
Sassafras
Rawrvapor Hawaii Sunrise
TPA Vanilla Custard flavoring
Tasty Vapor Cherry Cola
Vixen Vapor Rootbeer
TPA Pineapple flavoring
TPA Vanilla Bean Ice Cream flavoring
Vaporgod Licorice
VAL Goddess
VermillionRiver e juice
I would recommend looking into a glass tank if you would like to be safe around with a tank setup. Liquids can also leech onto the plastic and cloud the tank and cause a terrible taste, as you are vaping the plastic from the tank along with your liquid. Check the below sites for the best glass tank, in my opinion.
www.ibtanked.com
www.Phiniac.com
