There are ways to sing these consonants without having a sudden explosion of air & I would suggest that for those of you who are gigging, it is pretty important to get to grips with this.
B – Simply avoid pushing too much air from behind the lips as this is the cause of the problem!
P – I think of using ‘goldfish lips’ to soften the attack of this one. If you can, just lightly touch your lips together to form the “p” sound.
D – this one is caused by the tip of the tongue touching the alveolar ridge behind the top row of teeth. Again, be aware that if you push too much air through, this is the cause of an explosive consonant.
T – similar to the D above, except you can now in certain cases even cause sibilance too. Just follow the tips above for the “D” sound
K – this one is unusual as it is made primarily in the back of the throat. This is perhaps a slightly more rare explosive consonant, however if it is causing your problems it is worth ‘toning down’ the amount of push that you put behind the sound.
G – Also made in the back of the throat, simply identify anywhere lyrically that it will come up & soften the approach, by being mindful that what you are going is blocking off the exit of the air & suddenly releasing it.